Casing for piles.



Patented Jan. 2, 1917".

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CASING FOR PILES. ArPucATloN man MAR. 20, 1913.

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CLARENCE H. J' ONES, OF SEATTLE, WASHINGTON, ASISIGNOR 0F ONE-HALF T0 HENRY C. IBROMLEY, F SEATTLE, WASHINGTON..

CASING FOR PILES.

Specification of Letters Patent..

Patented Jan. e, 191'?.

Application led March 20,1913. Serial No. 756,829.

. specification.

My invention relates to an improvement in protective coverings for piles, and comprises the novel parts and combinations of parts which will be hereinafter described and particularly pointed out in the claims.

The object oi" my invention is to provide a plan and means whereby a covering or easing may be placed about a pile so as to protect it from the destructive work of the tere-.do and like insect enemies, and also to strengthen the same and make of the pile a permanent structure.

One of the important features of my invention, is the making of the covering or casing, in such. way that it may be applied to a pile having a Stringer or cap thereon, without necessitating the removal of said cap or Stringer.

It is also a feature of my invention that the casing is composed of concrete or a like substance which is cheap to make, strong, and is as nearly indestructible as it is possible Vto use.

In the accompanying drawings I have shown my invention embodied 'm the form which is now preferred by me.

' Figure 1 is an elevation of a' casing made in accordance with my invention. Fig. 2 is a central sectional elevation of the same. Fig. 3 is a transverse section through the main portion or body of the casing. Fig. 4 is a plan view of the pile-centering rings which are placed at the lower end of the casing. Fig. 5 is a bottom plan view of the lowermost -or base sections.

The central idea of my-invention, is the A.

these segments, are molded to such a shape use of a casingmolded of concrete, in sections, each section extending peripherally partly about the pile, ordinarily halfway.

around, and -in such length as may be conveniently handled, the segments being added to as necessary'to get the desired length. These segments are provided with interlocking constructions on their edges and the ends, ofthose segments in one vertical row are ar-.

ranged to come at the middle part of those ofthe adjacent4 row, so that all jointsare broken and the entire column of casing segments are locked together to form a strong tubular column surrounding the pile.

As a base, two special segments are used, having a broad footing 21, thereby providing an increased bearing surface for carrying'the load. These base sections 2 and 20,

are provided with a downwardly projecting lip, or flange, surrounding the ile-receiving opening. This lip, 23, is pre erably tapering on its external surface and is designed to project into the mud and earth about the pile to prevent escape of the concrete, which is later filled into the space between casing and pile. I have also shown this lip as provided with ribs 24, extending vertically on its outer surface. When the ile casing has been j assembled and lowere into contact with the bottom, by slight turning movement thereof, it may be made to sink into the bottom, the ribs 24; assisting in disturbing and loosening the earth and giving slightly easier penetration. The segments, as herein shown, are all made to extend half way about the pile, althoughthis proportion may be varied Within certain limits. From the upper surface of the footings 21, extend theshort sections of semi-tubular shape, which form the casing proper. The portion 26 which forms a part of the base section 2, is 'of greater length than the part 27 which forms a part of the base section 20. The difference between the lengths of these parts is, preferably, half the length of those segments which are used iii making. the main body of the casing. The purpose of this is to cause the transverse joints of the successive segments and opposite halves to break joints.

The segments which form the body of the ,casing above the base, consist of semi-tubular members 1, of a size to match with the semi-tubular portions 26 and 27 of the base segments. The vertical meeting edges of that they dovetail, or interlock, so as to prevent separation when once assembled. The assembling is done by sliding them together lengthwise, or in a direction parallel with their axis. The form of joint which I now prefer, isshown in the transverse section of Fig. 3, the dovetailed head 10, being on the inner side of one segment, and the complemental dovetail head 11, being on the outer sideof the companion segment. The portion ofthe base segments 2 and 20, have like A interlocking construction, extending downward to about the lower edge of the base footing and there stopping.. From this oint downward, the edges meet as flush aces.- This forms astop to prevent one side of the .base slipping farther down than 'the other. j

The meeting end edges of the segments are hollowed at one end and pointed at the j other, as shown in Fig. 2 4at A3, whereby side ldisplacement is further prevented. Any other equivalent shape which secures like results might be used. As one of thelower or base sections is shorter than the other, so the upper end of the casing has one segment,

12, of half length, so that both sides will Y v about the pile as possible, without causing ing bars 22, may be employed. Each of the it to bind when lowering. The ring 40, beneath this is made to fit tightly within the recess, to thereby hold the other ring securely in place. The purpose of these rings is to prevent mud from entering the space between the base segments and the pile.

In molding the base segments, reinforcsegments should have some means for binding them to the inner lining layer of concrete. The means herein shown consist of bonding strips 5, of metal, which are molded in place in the casing segments.

.The lower, or base, segments have recesses i 28, in their outer surface, adapted to receive l tions of the casing together and tothe pile, v making of the whole a substantially unihooks, by which they may be supported whilev assembling the upper segments and during lowering. The casing is lowered as it is builtup from the top until it reaches and beds itself in the bottom. The ropes carrying the hooks by which it is supported, are then slacked of, being thereby released from the holes, and' drawn up.

After the casing has been assembled and settled in place, thin concrete or' grouting, is poured into the space between the casing an pile. This thoroughly .bonds the seetary structure, consisting of a wooden core or center and a concrete column surrounding and supporting the same. The cement entering between the joints of the casing segments binds them securely together. rllie Langer.

strength of the pile has been much increased,

the concrete thereafter being relied upon as .thereonwhich would prevent slippingthe .j piles on lengthwise. '.llns covering may be Vplaced vupon piles which have been somewhat acted upon by the teredos, with the result that the teredos which are then within the pile will vbe killed, as they cannot get any further supply of salt water, and no more can obtain access to the wooden core. The concretegwill strengthen the pile so that it becomes as strong to carry weight as it originally was.

The sections herein described as forming the body of the casing above the base, may be employed to advantage in any place and for any purpose where a casing or a tubular conduit may be required, whether this conduit be placed in a vertical or in a horizontal position. Sections such as sections 1, may be made .wherever convenient and assembled to serve, .for instance, as a sewer,

or for other like purposes. When used in this waycement may, or should, be placed in the joints between the sections, both for the purpose of more securely joining them together and to make the joints tight against leakage. To assemble the sections and to place the cement in the joints is a simple and rapid operation. The completed conduit will then be cemented together to closely resemble a monolithic structure in its characteristics.

What I `claim as my invention is:

1. A casing for piles comprising a base sectionV composed of two segments, each havingan outwardly extending footing, adownwardly extending lip or iange bordering -the central pile-recelving opening, and an upwardly extending semi-tubular shell, said segments having meeting edges provided with complemental interlockin constructions adapted to be engaged y relative axial movements.

2. A casing for piles having a base section composed of two segments divided along vertical lines, their meeting edges having complemental interlocking shapes adapted to be engaged by lengthwise movement, each segment having outwardly extending footings and a downwardly extending ,lip or iiange borderin the pile-receiving opening and an upwar ly .extending semi-tubular shell, which shells are of unequal length for the respective segments.

3. A p1le comprising a continuous central `wooden core and a protective casing therefor composed of segmental concrete sections having their vertical edgesof complemental interlockin shape integral therewith and engageable y relative axial movements.

4. A pile comprising a continuous central wooden core and a protective casing therefor composed of segmental concrete sections having their vertical edges of complemental interlocking shape integral therewith and engageable by relative axial movements, said sections also having interlocking end shapes.

5. A pile comprising a continuous central wooden core and a protective casing therefor composed of segmental concrete sections having their vertical edges of complemental interlocking shape integral therewith and engageable by relative axial movements, said l concrete segments being of Va size to be spaced outward from the central wooden core when in place and a filling for the space between core and inclosing segments composed of cementitious material placed therein when in a plastic state.

In testimony whereof I have hereunto afxed my signature at Seattle, Washington,

-this 14 day of March, 1913.

CLARENCE H. J ONES. 

